Brand NEW! Eminence's Delta-15B 16 ohm 15" speaker is recommended for professional audio as a midbass or stage monitor woofer in sealed enclosures. Also for midbass or woofer use in vented PA enclosures, as well as musical instrument systems. Key Features Fast replacement in vintage Hammond Leslie 122, 147, and 247 cabinets Polyamide-imide coated copper voice coil Ferrite magnet Vented pole piece Pressed steel basket Paper cone Cloth accordian surround Eminence's Delta-15B 16 ohm 15" speaker is recommended for professional audio as a midbass or stage monitor woofer in sealed enclosures. Also for midbass or woofer use in vented PA enclosures, as well as musical instrument systems. Made in the USA. 7-year manufacturer's warranty! This is speaker you need if you are replacing the 15 inch 16 ohm driver in a Leslie 147/247 cabinet. Excellent price compared to other Hammond/Leslie specific repair sites. Product Specifications Nominal Diameter 15" Moving Mass Of Diaphragm (Mmd) 64 Power Handling (RMS) 400 Watts Power Handling (MAX) 800 Watts Impedance 16? Frequency Response 64 to 4,000Hz Sensitivity 100dB 2.83V/1m Voice Coil Diameter 2.5" Thiele-Small Parameters Resonant Frequency (Fs) 45Hz DC Resistance (Re) 11.3? Voice Coil Inductance (Le) 1.35mH Mechanical Q (Qms) 6.54 Electromagnetic Q (Qes) 0.67 Total Q (Qts) 0.61 Compliance Equivalent Volume (Vas) 7.2ft Mechanical Compliance of Suspension (Cms) 0.19mm/N BL Product (BL) 17.6T·m Maximum Linear Excursion (Xmax) 1.6mm Surface Area of Cone (Sd) 856.3cm Materials of Construction Cone Material Paper Surround Material Cloth Voice Coil Wire Material Copper Voice Coil Former Kapton / Polyimide Basket / Frame Material Steel Magnet Material Ferrite Mounting Information Overall Outside Diameter 15.15" Baffle Cutout Diameter 13.87" Depth 6.05" # Mounting Holes 8 Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion) Sealed Volume 1.09ft Sealed F3 70Hz Vented Volume 3.63ft Vented F3 35Hz - All international buyers are responsible for all tax, duties and/or customs fees.